Service Notification Action Log Data

Hello,

I am trying to fetch "Action Log" provided on Service Notifications.

I have already checked Tables: JEST, JCDS, IHPA

Table JCDS -- It does give me Status change and time stamps and other details. But if there is any change in Service Notification by a specific user (When the SO User Status is CRTE) then that user's name and time stamps do not get logged in the JCDS table. I am desperately trying to get the entire Action Log information.

Any help appreciated!

Regards,

Divya